Condition NISSAN TEANA 2008 Service Manual

EC-240
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0605 ECM
P0605 ECM
DescriptionINFOID:0000000003856702
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
DTC LogicINFOID:0000000003856703
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1. Turn ignition switch ON.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-241, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds, and then turn it ON.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-241, "Diagnosis Procedure".
NO >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds, and then turn it ON.
3. Repeat step 2 for 32 times.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-241, "Diagnosis Procedure".
NO >> INSPECTION END
PBIA9222J
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0605 Engine control moduleA) ECM calculation function is a malfunctioning.
ECM B) ECM EEP-ROM system is a malfunctioning.
C) ECM self shut-off function is a malfunctioning.

EC-242
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0607 ECM
P0607 ECM
DescriptionINFOID:0000000003856705
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
DTC LogicINFOID:0000000003856706
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-242, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856707
1.INSPECTION START
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC CONFIRMATION PROCEDURE.
See EC-242, "
DTC Logic".
4. Check DTC.
Is the DTC P0607 displayed again?
Ye s > > G O T O 2 .
No >> INSPECTION END
2.REPLACE ECM
1. Replace ECM.
2. Go to EC-14, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0607 CAN communication busWhen detecting error during the initial diagno-
sis of CAN controller of ECM.ECM

P0643 SENSOR POWER SUPPLY
EC-243
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P0643 SENSOR POWER SUPPLY
DTC LogicINFOID:0000000003856708
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Start engine and let it idle for 1 second.
3. Check DTC
Is DTC detected?
YES >> Go to EC-243, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856709
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E38. Refer to Ground Inspection in GI-37, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P0643Sensor power supply
circuit shortECM detects that the voltage of power
source for sensor is excessively low or high. Harness or connectors
(APP sensor 1 circuit is shorted.)
(TP sensor circuit is shorted.)
[CMP sensor (PHASE) circuit is shorted.)
(PSP sensor circuit is shorted.)
(Battery current sensor circuit is shorted.)
 Accelerator pedal position sensor
 Throttle position sensor
 Camshaft position sensor (PHASE)
 Power steering pressure sensor
 Battery current sensor
APP sensor
Ground Voltage (V)
Connector Terminal
E110 4 Ground Approx. 5

P0850 PNP SWITCH
EC-245
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P0850 PNP SWITCH
DescriptionINFOID:0000000003856710
When the selector lever position is P or N, park/neutral position (PNP) signal from the TCM (VQ35DE engine)
or park/neutral position (PNP) switch (VQ25DE engine) is sent to ECM.
DTC LogicINFOID:0000000003856711
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Will CONSULT-III be used?
Will CONSULT-III be used?
YES >> GO TO 2.
NO >> GO TO 5.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 3.
3.CHECK PNP SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CONSULT-III. Then check the “P/N POSI SW” sig-
nal under the following conditions.
Is the inspection result normal?
YES >> GO TO 4.
NO-1 >> VQ35DE engine: Go to EC-246, "
Diagnosis Procedure (VQ35DE engine)".
NO-2 >> VQ25DE engine: Go to EC-247, "
Diagnosis Procedure (VQ25DE engine)".
4.PERFORM DTC CONFIRMATION PROCEDURE
1. Select “DATA MONITOR” mode with CONSULT-III.
2. Start engine and warm it up to normal operating temperature.
3. Maintain the following conditions for at least 50 consecutive seconds.
CAUTION:
Always drive vehicle at a safe speed.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0850Park/neutral position
switchThe signal of the park/neutral position (PNP)
signal does not change during driving after the
engine is started. Harness or connectors
[The park/neutral position (PNP) signal
circuit is open or shorted.]
 TCM (VQ35DE engine)
 Park/neutral position (PNP) switch
(VQ25DE engine)
Position (Selector lever) Known-good signal
N or P position ON
Except above position OFF
ENG SPEED 1,100 - 6,375 rpm
COOLAN TEMP/S More than 70°C (158°F)

EC-246
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0850 PNP SWITCH
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES-1 >> VQ35DE engine: Go to EC-246, "Diagnosis Procedure (VQ35DE engine)".
YES-2 >> VQ25DE engine: Go to EC-247, "
Diagnosis Procedure (VQ25DE engine)".
NO >> INSPECTION END
5.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-246, "
Component Function Check".
NOTE:
Use component function check to check the overall function of the park/neutral position (PNP) signal circuit.
During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO-1 >> VQ35DE engine: Go to EC-246, "
Diagnosis Procedure (VQ35DE engine)".
NO-2 >> VQ25DE engine: Go to EC-247, "
Diagnosis Procedure (VQ25DE engine)".
Component Function CheckINFOID:0000000003856712
1.PERFORM COMPONENT FUNCTION CHECK
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO-1 >> VQ35DE engine: Go to EC-246, "
Diagnosis Procedure (VQ35DE engine)".
NO-2 >> VQ25DE engine: Go to EC-247, "
Diagnosis Procedure (VQ25DE engine)".
Diagnosis Procedure (VQ35DE engine)INFOID:0000000003856713
1.CHECK DTC WITH TCM
Refer to EC-389, "
DTCIndex".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning part.
2.CHECK STARTING SYSTEM
Turn ignition switch OFF, then turn it to START.
Does starter motor operate?
YES >> GO TO 3.
NO >> Refer to BCS-16, "
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)".
3.CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch OFF.
2. Disconnect TCM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between TCM harness connector and IPDM E/R harness connector.
B/FUEL SCHDL 4.0 - 31.8 msec
VHCL SPEED SE More than 64 km/h (40 mph)
Selector lever Suitable position
ECM
Ground Condition Voltage
Connector Terminal
E16 102 Ground Selector leverP or N Battery voltage
Except above Approx. 0 V

P1212 TCS COMMUNICATION LINE
EC-249
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P1212 TCS COMMUNICATION LINE
DescriptionINFOID:0000000003856715
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.
DTC LogicINFOID:0000000003856716
DTC DETECTION LOGIC
NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-135, "
DTC Logic".
If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC Logic".
Freeze frame data is not stored in the ECM for this self-diagnosis.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-249, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856717
Go to BRC-62, "Work Flow".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212 TCS communication lineECM cannot receive the information from
“ABS actuator and electric unit (control
unit)” continuously. Harness or connectors
(The CAN communication line is open or short-
ed.)
 ABS actuator and electric unit (control unit)
 Dead (Weak) battery

EC-250
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1217 ENGINE OVER TEMPERATURE
P1217 ENGINE OVER TEMPERATURE
DTC LogicINFOID:0000000003856718
DTC DETECTION LOGIC
NOTE:
If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-135, "
DTC Logic".
If DTC P1217 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC Logic".
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
CAUTION:
When a malfunction is indicated, always replace the coolant. Refer to CO-8, "
Draining". Also, replace
the engine oil. Refer to LU-8, "
Draining".
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Always use
coolant with the proper mixture ratio. Refer to MA-12, "
Engine Coolant Mixture Ratio".
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-250, "
Component Function Check".
NOTE:
Use component function check to check the overall function of the cooling fan. During this check, a DTC might
not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-251, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000003856719
1.PERFORM COMPONENT FUNCTION CHECK-I
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217Engine over tempera-
ture (Overheat) Cooling fan does not operate properly (Over-
heat).
 Cooling fan system does not operate proper-
ly (Overheat).
 Engine coolant was not added to the system
using the proper filling method.
 Engine coolant is not within the specified
range. Harness or connectors
(The cooling fan circuit is open or short-
ed.)
 IPDM E/R (Cooling fan relays)
 Cooling fan motor
Radiator hose
Radiator
Radiator cap
 Water pump
Thermostat

EC-254
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1225 TP SENSOR
P1225 TP SENSOR
DescriptionINFOID:0000000003857978
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometer which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and controls the throttle valve opening angle in response to
driving conditions via the throttle control motor.
DTC LogicINFOID:0000000003856722
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-254, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856723
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
PBIB0145E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1225Closed throttle position
learning performanceClosed throttle position learning value is exces-
sively low. Electric throttle control actuator
(TP sensor 1 and 2)

EC-256
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1226 TP SENSOR
P1226 TP SENSOR
DescriptionINFOID:0000000003857979
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometer which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and controls the throttle valve opening angle in response to
driving conditions via the throttle control motor.
DTC LogicINFOID:0000000003856726
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Repeat steps 2 and 3 for 32 times.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-256, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003858130
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
PBIB0145E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1226Closed throttle position
learning performanceClosed throttle position learning is not per-
formed successfully, repeatedly. Electric throttle control actuator
(TP sensor 1 and 2)

EC-258
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1550 BATTERY CURRENT SENSOR
P1550 BATTERY CURRENT SENSOR
DescriptionINFOID:0000000003856732
The power generation voltage variable control enables fuel consumption to be decreased by reducing the
engine load which is caused by the power generation of the generator. The battery current sensor is installed
to the battery cable at the negative terminal. The sensor measures the charging/discharging current of the bat-
tery. Based on the sensor signal, ECM judges whether or not the power generation voltage variable control is
performed. When performing the power generation voltage variable control, ECM calculates the target power
generation voltage based on the sensor signal. And ECM sends the calculated value as the power generation
command value to IPDM E/R. For the details of the power generation voltage variable control, refer to CHG-5,
"System Description".
CAUTION:
Never connect the electrical component or the ground wire directly to the battery terminal. The con-
nection causes the malfunction of the power generation voltage variable control, and then the battery
discharge may occur.
DTC LogicINFOID:0000000003856733
DTC DETECTION LOGIC
NOTE:
If DTC P1550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-243, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and at wait
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and wait at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-258, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856734
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E38. Refer to Ground Inspection in GI-37, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT
1. Disconnect battery current sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between battery current sensor harness connector and ground.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1550Battery current sensor circuit
range/performanceThe output voltage of the battery current
sensor remains within the specified
range while engine is running. Harness or connectors
(The sensor circuit is open or shorted.)
 Battery current sensor